@article{DE_1974_10_6_a3,
     author = {L. G. Oreschenko},
     title = {Conditions for the existence of the maximal number of polynomial solutions of differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1009--1014},
     publisher = {mathdoc},
     volume = {10},
     number = {6},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_6_a3/}
}